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Posted to dev@hbase.apache.org by "Kevin Geiszler (Jira)" <ji...@apache.org> on 2026/07/20 18:28:00 UTC

[jira] [Resolved] (HBASE-30220) A replica cluster can have read-only mode disabled even when another active cluster already exists

     [ https://issues.apache.org/jira/browse/HBASE-30220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevin Geiszler resolved HBASE-30220.
------------------------------------
    Resolution: Fixed

> A replica cluster can have read-only mode disabled even when another active cluster already exists
> --------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-30220
>                 URL: https://issues.apache.org/jira/browse/HBASE-30220
>             Project: HBase
>          Issue Type: Bug
>          Components: read replicas
>            Reporter: Kevin Geiszler
>            Assignee: Kevin Geiszler
>            Priority: Major
>              Labels: pull-request-available
>
> Assume you have a Read-Replica cluster setup where one cluster is the Active Cluster and the other cluster is a Replica Cluster with read-only mode enabled.  Currently, it is possible to disable read-only mode on the Replica Cluster and end up with two clusters that allow writes.  This should not happen.
> The steps to reproduce this are simple:
>  # Start one cluster as the Active Cluster and another as the Replica Cluster
>  # You should be able to create a table and add data on the Active Cluster but not on the Replica Cluster.
>  # Change the {{hbase.global.readonly.enabled}} property from {{true}} to {{false}} on the Replica, save the conf file, and run {{update_all_config}}
>  # Verify you can now create a table and add data on both clusters



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